Wetting out, cleaning, and emulsion agents in a solid grindable form



alin, etc.

. peroxide dissolved. One could Patented Apr. 30, 1935 WE-TTING OUT, AGENTS IN A CLEANING, AND EMULSION, soup GRINDABLE FORM Peter Friesenhahn, Berlin-Grunewald, Germany, assignor, by mesne assignments, to Unichem Chemikalien Handels land, a corporation of No Drawing.

Serial No. 1929 4 Claims.

It is a known fact that the cleansing power of a soap may be considerably increased by combining the latter with organic solvents as for instance benzine, benzol, oil of turpentine; hex- These so called soap solvents appear in the trade not only in a liquid or semi-liquid form but also as solids and as soap powders.

Soapless, dry wash-powders with a nominal content of firmly bound organic solvents have so far not been known. Attempts have been made to produce mixtures of carbon tetrachloride and sodium peroxide, and they have been solidified byadding to them larger quantities of sodium bicarbonate or sulphate of magnesia.

- The purpose of adding the carbon tetrachloride wasv simply to neutralize the alkali that was freed in large quantities when sodium not fail to observe that. the volatile material that had in no way been firmly bound and added in a mechanical sense, evaporated in a comparatively short time from the mixture.

Attempts have also been made to produce solid emulsions that contain the fats, oils, resins, tars, etc. in an emulsive form, by adding salts tending to bind the water of crystallization in the emulsion. These solid emulsions however neither possess any value regarding washing nor a wetting-out power, nor do they contain any volatile organic fat-solvents.

It is furtherknown that the majority of the aliphatic and aromatic higher molecular sulphonic acids and their alkaline salts, possess a 'more or less effective wetting-out emulsifying and cleaning power, and that especially the cleaning power may further be strengthened when they are combined with volatile organic solvents.

Itjis further known" that the alkaline salts of the phosphoric acids, in particular the trisodium phosphate possess certain fat dissolving and thereby, dirt removing properties and that for this reason-they are very often used for cleaning purposes.

The trisodium phosphate may also be brought together in combination with soaps or silicate of sodium (water glass). The present invention provides a composition in which the three substances namely, the light and liquid organic fat solvents, the relatively heavy liquid aliphatic or aromatic sulphonic acids and the crystallized phosphoric alkali salts form together a homogeneous solid grindable mass.

This effect cannot be brought about by simply mixing the three substances together. It has been found however that the looked-for goal may Application December 14, 414,222. In Germany October 12;

had been merely A.-G., Zurich, 'Switzer- Switzerland easily he arrived at if on the one hand the properties of the calcined salts, namely to bind water of crystallization are being resorted to and if on the other hand the feature is made use of,

namely that a combination of the alkali salts of the phosphoric acid and higher molecular sulphonic acids may bind liquid organic fat solvents to a far higher degree and in a much more solid form than could be expected. This action may be performed by the heating for instance of 20 parts of Turkey-red oil together with 5 parts of tetra-hydronaphthalenesulphonate of sodium and 40 parts of crystallized trisodium phosphate. To this mixture may be added parts of a higher molecular alcohol little or not at all soluble in water, as for instance hexalin. methylhexalin, butyl alcohol, etc. Having arrived at a homogeneous mass, I finally add 25 parts of soda ash. The whole mass will solidify after a comparatively short time and may be ground. The

solution in water.

I may also proceed in product yields a clear another direction how.-

ever, in that I avoid making an addition of soda ash and, on the contrary use trisodium phosphate freed from water,

material.

directly as a starting I find for instance that 30 parts of Turkey-red oil, 10 parts of methylhexalin and 10 parts of tetra-hydronaphthalenesulphonate of sodium will likewise solidify in form of a solid grindable mass,;provided there be added to the mixture about 50 parts of trisodium phosphate freed from water by heating.

I may also replace the Turkey-red oil as mentioned in the above two instances with any other aliphatic sulphonating product as for instance a liquid resin treated with sulphuric-acid, the so called Swedish liquid resin (also known as talleol), or an aromatic sulphonic acid as for instance the octohydroanthrazenesulphonic acid or its alkaline salts. The higher alcohols may also be replaced with any other organic fat solvent as for instance .derived as a by-product the so called pine oil at the pine wood distillation, or turpentine oil, etc., and the role played by soda ash may be taken over by any other salt that is free from water and which has the property of binding water of crystallization. The ratio of proportions also between solvents,

sulphonic acids and phosphoric may vary within wide limits.

alkaline salts Above all, the water solutions of the materials as derived according to the above described process, possess an extraordinarily high wetting-out power end in addition to this a not lesser emulsive property; And 'due to the comparatively high contents of organic fat solvents they also ter and finally adding to this mass twenty-five parts of soda ash.

2. The process of producing a solid grindable detergent which comprises melting together thirty parts of Turkey-red oil, ten parts of methylhexaline, ten parts of tetra-hydronaphthalenes'ulphonate of sodium and fifty parts of dehydrated tri-sodium phosphate.

3 A solid grindable detergent comprising Turkey-red oil, tetra-hydronaphthalene sulpho; nate of sodium, crystallized tri-sodium phosphate, high molecular alcohol substantially insoluble in water and soda ash.

.4. A solid grindabler detergent comprising Turkey-red oil, methylhexaline, tetra-hydronaphthalene sulphonate of sodium and dehydrated -tri-soclium phosphate.

PETER FRIESENHAHN. 

